20672589

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{263}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 33454080

約数和(自身を除く): 12781491

約数列:

[1, 3, 7, 19, 21, 57, 133, 197, 263, 399, 591, 789, 1379, 1841, 3743, 4137, 4997, 5523, 11229, 14991, 26201, 34979, 51811, 78603, 104937, 155433, 362677, 984409, 1088031, 2953227, 6890863, 20672589]

約数ペア:

[(1, 20672589), (3, 6890863), (7, 2953227), (19, 1088031), (21, 984409), (57, 362677), (133, 155433), (197, 104937), (263, 78603), (399, 51811), (591, 34979), (789, 26201), (1379, 14991), (1841, 11229), (3743, 5523), (4137, 4997)]